Python: Find a palindrome of a given length containing a given string
Python Programming Puzzles: Exercise-95 with Solution
Write a Python program to find a palindrome of a given length containing a given string.
Input: madam , 7 Output: madaadam Input: madam , 6 Output: maddam Input: madam , 5 Output: maaaam Input: madam , 3 Output: maam Input: madam , 2 Output: mm Input: madam , 1 Output: aa
Sample Solution:
Python Code:
#License: https://bit.ly/3oLErEI
def test(s, length):
s_index = 0
length_half = (length - (length % 2)) // 2
ans = ""
while len(ans) < length_half:
ans += s[s_index%len(s)]
s_index += 1
if length % 2 == 1:
ans += "a"
return ans + ans[::-1]
s = 'madam'
length = 7
print("String and length of the palindrome:",s,",",length)
print("Palindrome of the said string and length:")
print(test(s, length))
s = 'madam'
length = 6
print("\nString and length of the palindrome:",s,",",length)
print("Palindrome of the said string and length:")
print(test(s, length))
length = 5
print("\nString and length of the palindrome:",s,",",length)
print("Palindrome of the said string and length:")
print(test(s, length))
length = 3
print("\nString and length of the palindrome:",s,",",length)
print("Palindrome of the said string and length:")
print(test(s, length))
length = 2
print("\nString and length of the palindrome:",s,",",length)
print("Palindrome of the said string and length:")
print(test(s, length))
length = 1
print("\nString and length of the palindrome:",s,",",length)
print("Palindrome of the said string and length:")
print(test(s, length))
Sample Output:
String and length of the palindrome: madam , 7 Palindrome of the said string and length: madaadam String and length of the palindrome: madam , 6 Palindrome of the said string and length: maddam String and length of the palindrome: madam , 5 Palindrome of the said string and length: maaaam String and length of the palindrome: madam , 3 Palindrome of the said string and length: maam String and length of the palindrome: madam , 2 Palindrome of the said string and length: mm String and length of the palindrome: madam , 1 Palindrome of the said string and length: aa
Flowchart:

Python Code Editor :
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